This Pelican 9430 Remote Area Lighting System Head Black (R.A.L.S.) is a stand-alone head, mast and battery system that is an ideal portable light for fire, rescue, emergency, and military applications. The 9430 consists of a power unit with 125? LED array on an extendible (up to 32.28 / 82 cm) mast. Operation and setup is fast and very intuitive. The head and mast fold neatly into the battery base, minimizing space concerns. This improved version boasts 3,000 lumens of output on High setting and gets 15 hours of run time on a fully charged battery (Low setting).